meteorologist Alfred Wegener
German meteorologist Alfred Wegener is often credited as the first to develop a theory of plate tectonics, in the form of continental drift.
How are Earth’s tectonic plates formed?
The plates — interlocking slabs of crust that float on Earth’s viscous upper mantle — were created by a process similar to the subduction seen today when one plate dives below another, the report says. Other researchers have estimated that a global tectonic plate system emerged around 3 billion years ago.
What do you mean by the theory of plate tectonics?
The theory of plate tectonics states that the Earth’s solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. Oceanic and continental plates come together, spread apart, and interact at boundaries all over the planet.
Who first proposed the idea of plate tectonics How was it develop and supported?
Plate tectonic theory had its beginnings in 1915 when Alfred Wegener proposed his theory of “continental drift.” Wegener proposed that the continents plowed through crust of ocean basins, which would explain why the outlines of many coastlines (like South America and Africa) look like they fit together like a puzzle.
Who were the scientists that have contributed to the study of plate tectonics?
Many scientists contributed to the development of plate tectonics. Alfred Wegener laid the foundation of plate movements with his continental drift theory. Harry Hess proposed the theory of seafloor spreading which supported the continental drift theory.
What is the main cause of plate tectonics?
Plate tectonics is the scientific theory explaining the movement of the earth’s crust. The movement of these tectonic plates is likely caused by convection currents in the molten rock in Earth’s mantle below the crust. Earthquakes and volcanoes are the short-term results of this tectonic movement.
